System and apparatus for module insertion during pipeline installation
OwnerWayne R. Long, Alvin J. Nieburinventors
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Abstract
A system and a method for introducing a module into a pipeline during deepwater pipeline installation wherein a hang-off clamp supports a pipeline and translates from a pipeline feeding position to a module connection position wherein a module is connected to the pipeline. By-pass lines support the pipeline and module and lower them past the hang-off clamp. The hang-off clamp resumes support of the pipeline and returns to the pipeline feeding position with the pipeline and module.
Claims29
A system for introducing a module into a pipeline being fed from a vessel into a body of water, the system comprising:
- a tower mounted on the vessel and adapted to feed the pipeline into the body of water;
- a rail mounted on the tower;
- and
- a hang-off clamp adapted to support the pipeline and to travel along the rail between a pipeline feeding station and a module insertion station.
A system for introducing a module into a pipeline during deepwater pipeline installation, the system comprising:
- (a) a first station;
- (b) a second station;
- and
- (c) a hang-off clamp adapted to support the pipeline and translate between the first and second stations.
A method for introducing a module into a pipeline during deepwater pipeline installation, comprising supporting the pipeline by a hang-off clamp adapted to translate between a first station and a second station.
A method for introducing a module into a pipeline being fed down through a pipe tensioner of a vessel mounted tower and into a body of water, the method comprising:
- (a) engaging the pipeline with a hang-off clamp below the pipe tensioner;
- (b) forming the pipeline into two sections by severing the pipeline at a module insertion location on the pipeline between the pipe tensioner and the hang-off clamp;
- (c) displacing one of the pipeline sections relative to the other without disengaging the hang-off clamp from the pipeline.
Dependencies are inferred from the claim text.